Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: De qual liga é o jogador escolhido pelo Atlanta Thrashers (de Dallas) 6?
 ###Tabelas: CREATE TABLE round_four (round_four_id AUTO_INCREMENT PRIMARY KEY, Pick # INT, Player VARCHAR, Nationality VARCHAR, Position VARCHAR, NHL team VARCHAR, Team from VARCHAR, League from VARCHAR) CREATE TABLE pool_4 (pool_4_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Tries for VARCHAR, Tries against VARCHAR, Try diff VARCHAR, Points for VARCHAR, Points against VARCHAR, Points diff VARCHAR) CREATE TABLE engine_roster (engine_roster_id AUTO_INCREMENT PRIMARY KEY, Locomotive number VARCHAR, Model VARCHAR, Type VARCHAR, Propulsion VARCHAR, Manufacturer VARCHAR) CREATE TABLE general_electric (general_electric_id AUTO_INCREMENT PRIMARY KEY, PRR Class VARCHAR, Builder’s Model VARCHAR, Build date VARCHAR, Total produced INT, Wheel arrangement VARCHAR, Service VARCHAR, Power output VARCHAR) CREATE TABLE current_team (current_team_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Current singles ranking VARCHAR, Current doubles ranking VARCHAR, First year played INT, Ties played INT, Total W–L VARCHAR, Singles W–L VARCHAR, Doubles W–L VARCHAR)  
SELECT League from FROM round_four WHERE NHL team = atlanta thrashers (from dallas) 6